ElementRowSpace( B, n )
returns the n-th element of the row space with basis B, with respect
to the ordering defined in NumberVector NumberVector.
gap> v:= GF(3)^3;; v.name:= "v";;
gap> b:= CanonicalBasis( v );;
gap> l:= List( [0 .. 6 ], x -> ElementRowSpace( b, x ) );;
gap> List( l, x -> NumberVector( b, x ) );
[ 0, 1, 2, 3, 4, 5, 6 ]
GAP 3.4.4